import java.net.*;

public class ReceiveLetterForLi implements Runnable {

   public void run() {

      DatagramPacket pack=null;

      DatagramSocket postman=null;

      byte data[]=new byte[8192];

      try{  pack=new DatagramPacket(data,data.length);

            postman = new DatagramSocket(666);

      }

      catch(Exception e){} 

      while(true) {  

        if(postman==null) break;

        else

          try{ postman.receive(pack); 

               String message=new String(pack.getData(),0,pack.getLength());

               System.out.printf("%25s\n","收到:"+message);

          }

          catch(Exception e){}

      } 

   }

}
